Freeze Protection; Electric Wiring Work - Gree D Series Service Manual

7 FREEZE PROTECTION

measures stated below for freeze protection.
Under subzero conditions, it is necessary to shut down the chiller installed outdoor and then drain the
evaporator completely.
Failure of the chilled water flow switch and the anti-freezing temperature sensor will cause the tube
When charging or recovering the refrigerant, the evaporator would crack because of frostbite provided
the refrigerant pressure inside the evaporator is under 0.71MPa. Therefore, be sure to keep the water

8 ELECTRIC WIRING WORK

8.1 Wiring Principle
All wiring shall comply with applicable codes and engineering requirements.
Never perform wiring before the power supply is cut off.
WARNING: only copper conductor is allowed.
(1).
The power cord must be routed inside the conduit.
caused by the sharp edge of the metal sheet.
(2). Control Line
parallel with the 50V or higher line. If inevitable, the hi-voltage and low-voltage signals must keep a
distance of at least 150mm.
electric heater, however, never do not drive them directly through the control signal but through their AC
contactors.
A reasonable length of the control line should be left outside the unit and the rest should be bundled and
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D Series Modular Air-cooled Scroll Chillers
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